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rcu: Remove superfluous local variable in rcu_init_geometry()

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Local variable 'n' mimics 'nr_cpu_ids' while the both are
used within one function. There is no reason for 'n' to
exist whatsoever.

Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Alexander Gordeev 2015-06-03 08:18:24 +02:00 committed by Paul E. McKenney
parent 75cf15a4c0
commit 372b0ec24f
1 changed files with 7 additions and 7 deletions
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14
kernel/rcu/tree.c
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@ -4083,7 +4083,6 @@ static void __init rcu_init_geometry(void)
ulong d;
int i;
int j;
int n = nr_cpu_ids;
int rcu_capacity[MAX_RCU_LVLS + 1];
/*
@ -4133,15 +4132,16 @@ static void __init rcu_init_geometry(void)
* The tree must be able to accommodate the configured number of CPUs.
* If this limit is exceeded than we have a serious problem elsewhere.
*/
if (n > rcu_capacity[MAX_RCU_LVLS])
if (nr_cpu_ids > rcu_capacity[MAX_RCU_LVLS])
panic("rcu_init_geometry: rcu_capacity[] is too small");
/* Calculate the number of rcu_nodes at each level of the tree. */
for (i = 1; i <= MAX_RCU_LVLS; i++)
if (n <= rcu_capacity[i]) {
for (j = 0; j <= i; j++)
num_rcu_lvl[j] =
DIV_ROUND_UP(n, rcu_capacity[i - j]);
if (nr_cpu_ids <= rcu_capacity[i]) {
for (j = 0; j <= i; j++) {
int cap = rcu_capacity[i - j];
num_rcu_lvl[j] = DIV_ROUND_UP(nr_cpu_ids, cap);
}
rcu_num_lvls = i;
for (j = i + 1; j <= MAX_RCU_LVLS; j++)
num_rcu_lvl[j] = 0;
@ -4152,7 +4152,7 @@ static void __init rcu_init_geometry(void)
rcu_num_nodes = 0;
for (i = 0; i <= MAX_RCU_LVLS; i++)
rcu_num_nodes += num_rcu_lvl[i];
rcu_num_nodes -= n;
rcu_num_nodes -= nr_cpu_ids;
}
/*